The Patent Finder

PSK Inc.

35 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
1
Ending by 2030
Jan 2027
Next term end

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
  • 2 fees due Dec 4, 2026
  • 1 fee due Feb 27, 2027
    The maintenance fee for Substrate treating apparatus, substrate treating method, and plasma generating unit (US 10,395,898) comes due Feb 27, 2027. Unpaid by Aug 27, 2027, it lapses early.
  • 1 fee due Apr 3, 2027
    The maintenance fee for Substrate processing apparatus and substrate processing method (US 11,776,791) comes due Apr 3, 2027. Unpaid by Oct 4, 2027, it lapses early.
  • 1 fee due May 14, 2027
    The maintenance fee for Faraday shield and apparatus for treating substrate (US 11,817,291) comes due May 14, 2027. Unpaid by Nov 15, 2027, it lapses early.
  • 2 fees due Jun 15 to 26, 2027 · next Jun 15
  • 1 fee due Jul 2, 2027
    The maintenance fee for Substrate processing apparatus (US 11,862,434) comes due Jul 2, 2027. Unpaid by Jan 3, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 2 of the patents on this record were granted since Aug 16, 2026

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
PatentTitleStatus Expires Confidence
US 8,007,218Unit and method for transferring substrates and apparatus and method for treating substrates with the unit
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,477,031Apparatus and method for manufacturing light guiding plate
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,536,708Plasma generating device, method of controlling the same, and substrate processing device including the plasma generating device
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,514,919Baffle and substrate treating apparatuses including the same
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,214,357Substrate treating apparatus and method
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,779,918Substrate treating apparatus and method
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,390,957Substrate transfer apparatus and method, and substrate processing apparatus
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,508,541Apparatus and method for treating substrate
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,312,060Plasma generating apparatus using mutual inductive coupling and substrate treating apparatus comprising the same
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,945,570Unit and method for cooling, and apparatus and method for treating substrate
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 35 patents shown.
Pro members see all 35.
Pro members: see all 35 patents
Also on record, not counted in the 35: 1 lapsed for an unpaid fee · 1 ended at full term. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

15 pending · 2 abandoned · 22 no status recorded

List them

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited